The joke doesn’t require watching the movie so much as it’s “what if one of the most famous monologues in cinematic history was delivered with beep-boops and none of the characters in the scene understood it.”

Gamma had a bird inside him. He didn’t really have any particular love for birds, as far as I can tell. The E-series were all powered by Flickies, but it never seemed like he had any kind of attachment or whatever.

I don’t play Overwatch, but I was familiar with it, so I looked up everything I needed to. I will say that this is a long damn way to go for a joke – Roy Batty’s birthday form the movie, finding a good equivalent in current Pop Culture, etc.